/Engine/Source/Runtime/Landscape/Classes/LandscapeComponent.h
void CopyFinalLayerIntoEditingLayer ( [FLandscapeEditDataInterface](API\Runtime\Landscape\FLandscapeEditDataInterface) & DataInterface, [TSet](API\Runtime\Core\Containers\TSet)< [UTexture2D](API\Runtime\Engine\Engine\UTexture2D) * > & ProcessedHeightmaps )